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Start your free trialtimur sh
Courses Plus Student 3,150 Pointsjava.lang.NullPointerException - i use eclipse and i get this errore
i gote error i line String guessAsString = console.readLine("Enter a letter: ");
import java.io.Console;
public class Prompter {
private Game mGame;
public Prompter(Game game){
mGame = game;
}
public boolean promptForGuess(){
Console console = System.console();
String guessAsString = console.readLine("Enter a letter: ");
char guess = guessAsString.charAt(0);
return mGame.apllyGuess(guess);
}
}
4 Answers
Vincent Murray
11,300 PointsIf you are using Eclipse
//import java.io.Console;
import java.util.Scanner;
public class Prompter{
private Game mGame;
public Prompter(Game game){
mGame = game;
}
public boolean promptForGuess(){
//Console console = System.console();
Scanner kb = new Scanner(System.in); // kb for Keyboard input can be anything
//String guessAsString = console.readLine("Enter a letter :");
String guessAsString = kb.nextLine();
char guess = guessAsString.charAt(0);
return mGame.applyGuess(guess);
}
}
Then enter a letter in the console , and it will return a response
timur sh
Courses Plus Student 3,150 PointsThank you very much, you've been very helpful.
John Miller
4,007 PointsVincent,
Thank you for the information and this did solve my problem, although can you direct me to a resource which can explain to me 'why' I get a NullPointerException when using Console instead of Scanner.
Oshedhe Munasinghe
8,108 PointsVincent you saved me :) thanks a lot
Oshedhe Munasinghe
8,108 PointsWait a min.. when I complie that window doesnt say anything. I think you have to add System.out.println how do I do that?
anyway when complier runs and if I type just t it works :D